What is the brightest color of light box background and text?

Gold characters on white background, white characters on blue background.

1, gold lettering on a white background: Gold lettering on a white background is a common background collocation for advertising signs of light boxes, which is not only beautiful and elegant, but also has high color rendering.

2. White characters on the blue background: White characters on the blue background are the common background color of fast food restaurant signs, which can make the whole advertising sign look more refreshing and concise.